SiC Heating Element
Silicon carbide (SiC) rods, also known as silicon carbide heating elements, are high-performance non-metallic heating elements, made from high-purity green hexagonal SiC via 2200℃ high-temperature sintering. They feature high temperature resistance (up to 1450℃), fast heating speed, long service life, and easy installation, ideal for high-temperature industrial furnaces and scientific equipment.
Main Models & Applications:
(1) GD Series (Equal Diameter Rods)
Uniform diameter design, simple structure and low cost. Suitable for small box furnaces, muffle furnaces in labs and small-scale production. Common specs: Φ8–Φ40mm, length 200–2000mm.
(2) CD Series (Thick-end Rods)
Larger diameter cold ends reduce heat loss, with higher heating efficiency and longer lifespan. Perfect for large tunnel kilns, roller kilns and smelting furnaces in ceramic, glass industries. Common specs: heating section Φ8–Φ30mm, thick-end Φ20–Φ60mm.
(3) U Series (U-shaped Rods)
Bent U-shape for direct hanging installation, saving furnace space. Widely used in compact vacuum furnaces and ceramic sintering equipment.
(4) Custom Shaped Rods
Tailored W-type, plum-blossom type, threaded rods available for special furnace structures and heating requirements.
High-temperature resistance: In an oxidizing atmosphere, the normal operating temperature can reach 1450℃, and it can be continuously used for up to 2000 hours.
Excellent oxidation resistance: When heated in dry air at high temperatures, a protective layer of silicon dioxide (SiO₂) is formed on the surface of the silicon carbide rod, which endows it with strong oxidation resistance.
Good chemical stability: It has strong acid - resistance. However, it is corroded by alkaline substances at high temperatures.
Fast heating speed: It has the characteristics of fast heating - up, which can quickly raise the temperature of the heated object to the required level, improving production efficiency.
Long service life: With proper use and maintenance, silicon carbide rods have a relatively long service life, reducing the frequency of replacement and maintenance costs.
Easy installation and maintenance: The structure is simple, and it is convenient to install and maintain. It can also be easily matched with an automatic electronic control system to achieve precise temperature control.
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Item
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Unit
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Date
|
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Content of SiC
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%
|
99
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|
Content of SiO2
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%
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0.5
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Content of Fe2O3
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%
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0.15
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|
Content of C
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%
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0.2
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Density
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g/cm3
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2.6
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Apparent Porosity
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%
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<18
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Pressure-resisting Strength
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Mpa
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≥120
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Bending Strength
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Mpa
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≥80
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Operating Temperature
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℃
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≤1600
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Coefficient of Thermal Expansion
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10 -6/℃
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<4.8
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Thermal Conductivity
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J/Kg℃
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1.36*10
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Industrial electric furnace and experimental electric furnace: Silicon carbon rods are often used in medium and high temperature industrial electric furnaces and experimental electric furnaces. They are cost-effective and suitable for high temperature industrial fields such as ceramics, glass, and refractory materials.
Glass industry: Silicon carbon rods are widely used in float glass tanks, optical glass melting furnaces, and glass deep processing.
Metallurgy and refractory materials: In powder metallurgy, rare earth phosphors, electronics, magnetic materials, precision casting and other industries, silicon carbon rods are often used in push plate furnaces, mesh belt furnaces, trolley furnaces, box furnaces and other heating elements.
Other high temperature fields: Silicon carbon rods are also used in tunnel kilns, roller kilns, vacuum furnaces, muffle furnaces, smelting furnaces and various heating equipment, suitable for occasions where precise temperature control is required.
Shandong Robert New Material Co., Ltd. is located in Zibo City, Shandong Province, China, which is a refractory material production base. We are a modern enterprise that integrates the research and development, production, sales, kiln design and construction, technology, and export refractory materials. We have complete equipment, advanced technology, strong technical strength, excellent product quality, and good reputation. Our factory covers over 200 acres and an annual output of shaped refractory materials is approximately 30000 tons and unshaped refractory materials is 12000 tons.
Our main products of refractory materials include: alkaline refractory materials; aluminum silicon refractory materials; unshaped refractory materials; insulation thermal refractory materials; special refractory materials; functional refractory materials for continuous casting systems.
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